Sub-10 nm, high density titania nanoforests-gold nanoparticles composite for efficient sunlight-driven photocatalysis

被引：3

作者：

Tran, Viet V. ^{[1
,5
]}

Nguyen, Oanh T. T. ^{[1
]}

Le, Chi H. ^{[1
]}

Phan, Tuan A. ^{[2
]}

Hoang, Ban V. ^{[2
]}

Dao, Thang D. ^{[3
]}

Nagao, Tadaaki ^{[3
,4
]}

Hoang, Chung V. ^{[1
]}

机构：

[1] Vietnam Acad Sci & Technol, Inst Mat Sci, Hanoi, Vietnam

[2] R&D Ctr, Saigon High Tech Pk,Dist 9, Ho Chi Minh City, Vietnam

[3] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki 3050044, Japan

[4] Hokkaido Univ, Grad Sch Sci, Dept Condensed Matter Phys, Sapporo, Hokkaido 0600810, Japan

[5] Natl Chung Cheng Univ, Dept Phys, Chiayi 621, Taiwan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2017年 / 56卷 / 09期

关键词：

SENSITIZED SOLAR-CELLS; SINGLE-CRYSTAL ANATASE; TIO2; ARRAYS; GLASS;

D O I：

10.7567/JJAP.56.095001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present the photocatalytic activity in the visible frequencies of the forest-like composite materials composed of sub-10 nm, free-standing TiO2 nanowires (NWs) and the plasmonic gold nanoparticles (AuNPs@TiO2). We use the methylene blue (MB) as a probe to examine the photocatalytic activity of the AuNPs@TiO2 in the visible frequencies under various excitation conditions. The AuNPs@TiO2 composite exhibits a rate constant of photodegradation of MB molecules about two folds larger than that of the reported composite materials. The numerical calculation suggests that the hot-electron generation via the non-radiative plasmon damping is more impactful than the plasmon-induced near-field enhancement in the photodegradation process. (C) 2017 The Japan Society of Applied Physics

引用

页数：6

共 33 条

[1] Importance of Plasmonic Heating on Visible Light Driven Photocatalysis of Gold Nanoparticle Decorated Zinc Oxide Nanorods [J].